diff --git a/www/admin/class_test.php b/www/admin/class_test.php
index 2de50470..c76ab10b 100644
--- a/www/admin/class_test.php
+++ b/www/admin/class_test.php
@@ -23,7 +23,7 @@ if (!defined('SET_SESSION_NAME')) {
 	define('SET_SESSION_NAME', EDIT_SESSION_NAME);
 }
 // define log file id
-define('LOG_FILE_ID', 'classTest');
+$LOG_FILE_ID = 'classTest';
 // set language for l10n
 $lang = 'en_utf8';
 
diff --git a/www/configs/config.master.php b/www/configs/config.master.php
index a431185e..80a4b779 100644
--- a/www/configs/config.master.php
+++ b/www/configs/config.master.php
@@ -194,14 +194,13 @@ list($HOST_NAME) = array_pad(explode(':', $_SERVER['HTTP_HOST'], 2), 2, null);
 // we have either no db selction for this host but have db config entries
 // or we have a db selection but no db config as array or empty
 // or we have a selection but no matching db config entry
-if ((!isset($SITE_CONFIG[$HOST_NAME]['db_host']) && isset($DB_CONFIG) && count($DB_CONFIG)) ||
+if ((!isset($SITE_CONFIG[$HOST_NAME]['db_host']) && count($DB_CONFIG)) ||
 	(isset($SITE_CONFIG[$HOST_NAME]['db_host']) &&
 		// missing DB CONFIG
-		(!isset($DB_CONFIG)) ||
-		(isset($DB_CONFIG) && is_array($DB_CONFIG) && !count($DB_CONFIG)) ||
-		(isset($DB_CONFIG) && !is_array($DB_CONFIG)) ||
+		((is_array($DB_CONFIG) && !count($DB_CONFIG)) ||
+		!is_array($DB_CONFIG) ||
 		// has DB CONFIG but no match
-		(isset($DB_CONFIG) && is_array($DB_CONFIG) && count($DB_CONFIG) && !isset($DB_CONFIG[$SITE_CONFIG[$HOST_NAME]['db_host']]))
+		(is_array($DB_CONFIG) && count($DB_CONFIG) && !isset($DB_CONFIG[$SITE_CONFIG[$HOST_NAME]['db_host']])))
 	)
 ) {
 	echo 'No matching DB config found for: "'.$HOST_NAME.'". Contact Administrator';
diff --git a/www/lib/CoreLibs/Basic.php b/www/lib/CoreLibs/Basic.php
index f7a75e85..7f883ead 100644
--- a/www/lib/CoreLibs/Basic.php
+++ b/www/lib/CoreLibs/Basic.php
@@ -95,9 +95,8 @@
 namespace CoreLibs;
 
 // define check vars for the flags we can have
-/** @internal */
-define('CLASS_STRICT_MODE', 1);
-define('CLASS_OFF_COMPATIBLE_MODE', 2);
+const CLASS_STRICT_MODE = 1;
+const CLASS_OFF_COMPATIBLE_MODE = 2;
 
 /** Basic core class declaration */
 class Basic
diff --git a/www/lib/CoreLibs/DB/IO.php b/www/lib/CoreLibs/DB/IO.php
index 01e58a2c..c629f8f6 100644
--- a/www/lib/CoreLibs/DB/IO.php
+++ b/www/lib/CoreLibs/DB/IO.php
@@ -1915,19 +1915,19 @@ class IO extends \CoreLibs\Basic
 	{
 		switch ($kbn) {
 			case 'i':
-				$value = (!isset($value) || $value === '') ? "NULL" : intval($value);
+				$value = ($value === '') ? "NULL" : intval($value);
 				break;
 			case 'f':
-				$value = (!isset($value) || $value === '') ? "NULL" : floatval($value);
+				$value = ($value === '') ? "NULL" : floatval($value);
 				break;
 			case 't':
-				$value = (!isset($value) || $value === '') ? "NULL" : "'".$this->dbEscapeString($value)."'";
+				$value = ($value === '') ? "NULL" : "'".$this->dbEscapeString($value)."'";
 				break;
 			case 'd':
-				$value = (!isset($value) || $value === '') ? "NULL" : "'".$this->dbEscapeString($value)."'";
+				$value = ($value === '') ? "NULL" : "'".$this->dbEscapeString($value)."'";
 				break;
 			case 'i2':
-				$value = (!isset($value) || $value === '') ? 0 : intval($value);
+				$value = ($value === '') ? 0 : intval($value);
 				break;
 		}
 		return $value;
diff --git a/www/lib/autoloader.php b/www/lib/autoloader.php
index 8d19cdcd..8f89e1c1 100644
--- a/www/lib/autoloader.php
+++ b/www/lib/autoloader.php
@@ -15,12 +15,15 @@ if (class_exists('Autoload', false) === false) {
 		{
 			// print "(1) Class: $class / DIR: ".__DIR__."<br>";
 			// set directory seperator (we need to replace from namespace)
-			$ds = defined('DS') ? DS : DIRECTORY_SEPARATOR;
+			$DS = defined('DS') ? DS : DIRECTORY_SEPARATOR;
 			// base lib
-			$LIB = defined('LIB') ? LIB : 'lib';
-			// if lib is in path, do not add lib again
-			if (strpos(__DIR__, $LIB) !== false) {
-				$LIB .= $ds;
+			$LIB = defined('LIB') ? LIB : 'lib'.$DS;
+			// if lib is in path at the end, do not add lib again
+			// note that $LIB can have a directory seperator at the end
+			// strip that out before we do a match
+			$_LIB = rtrim($LIB, $DS);
+			if (preg_match("|$_LIB$|", __DIR__) === false) {
+				$LIB .= $DS;
 			} else {
 				$LIB = '';
 			}
@@ -35,9 +38,9 @@ if (class_exists('Autoload', false) === false) {
 			// set default extension
 			$extension = '.php';
 			// set full include path
-			$path = __DIR__.$ds.$LIB.substr($class, $len);
+			$path = __DIR__.$DS.$LIB.substr($class, $len);
 			// replace namespace \ with dir sepeator
-			$path = str_replace('\\', $ds, $path).$extension;
+			$path = str_replace('\\', $DS, $path).$extension;
 			// print "(2) Class clean: $path<br>";
 			// if path is set and a valid file
 			if ($path !== false && is_file($path)) {